Other Comprehensive Income Items (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Other Comprehensive Income (Loss), Before Tax
Cumulative translation adjustment	$ (7.2)	$ 0.9	$ (1.3)	$ (21.7)
Net unrealized gain (loss) on derivatives	2.1	4.7	6.0	(0.8)
Total other comprehensive income (loss), before tax amount	(5.1)	5.6	4.7	(22.5)
Other Comprehensive Income (Loss), Tax (Expense) Credit
Net unrealized gain (loss) on derivatives	(0.7)	(1.6)	(2.1)	0.3
Total other comprehensive income (loss), tax (expense) credit	(0.7)	(1.6)	(2.1)	0.3
Other Comprehensive Income (Loss), After Tax
Cumulative translation adjustment	(7.2)	0.9	(1.3)	(21.7)
Net unrealized gain (loss) on derivatives	1.4	3.1	3.9	(0.5)
Other Comprehensive Income (Loss), Net of Income Taxes	$ (5.8)	$ 4.0	$ 2.6	$ (22.2)